<template>
  <div class="header">
    <div class="nav-topbar">
      <div class="container">
        <div class="topbar-menu">
          <a href="javascript:;">小米商城</a>
          <a href="javascript:;">MUI</a>
          <a href="javascript:;">云服务</a>
          <a href="javascript:;">协议规则</a>
        </div>
        <div class="topbar-user">
          <a href="javascript:;" v-if="username">{{ username }}</a>
          <a href="javascript:;" v-if="!username" @click="login">登录</a>
          <a href="javascript:;" v-if="username" @click="logout">退出</a>
          <a href="/#/order/list" v-if="username" target="blank">我的订单</a>
          <a href="javascript:;" class="my-cart" @click="goToCart">
            <span class="icon-cart"></span>购物车({{ cartCount }})
          </a>
        </div>
      </div>
    </div>
    <div class="nav-header">
      <div class="container">
        <div class="header-logo">
          <a href="/#/index"></a>
        </div>
        <div class="header-menu">
          <div class="item-menu">
            <span>小米手机</span>
            <div class="children">
              <ul>
                <li
                  class="product"
                  v-for="(item, index) in phoneList"
                  :key="index"
                >
                  <!-- 以新窗口跳转 -->
                  <a :href="'/#/product/' + item.id" target="_blank">
                    <div class="pro_img">
                      <img v-lazy="item.mainImage" :alt="item.subtitle" />
                    </div>
                    <div class="pro-name">{{ item.name }}</div>
                    <div class="pro-price">{{ item.price | currency }}</div>
                  </a>
                </li>
              </ul>
            </div>
          </div>
          <div class="item-menu">
            <span>RedMi红米手机</span>
          </div>
          <div class="item-menu">
            <span>电视</span>
            <div class="children">
              <ul>
                <li class="product">
                  <!-- 以新窗口跳转 -->
                  <a href="" target="_blank">
                    <div class="pro_img">
                      <img
                        src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/6511d77270e94146c0b1f96b66d8cc58.png?thumb=1&w=200&h=138&f=webp&q=90"
                        alt=""
                      />
                    </div>
                    <div class="pro-name">XRedmi X55 2022款</div>
                    <div class="pro-price">2699元</div>
                  </a>
                </li>
                <li class="product">
                  <!-- 以新窗口跳转 -->
                  <a href="" target="_blank">
                    <div class="pro_img">
                      <img
                        v-lazy="
                          'https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/6511d77270e94146c0b1f96b66d8cc58.png?thumb=1&w=200&h=138&f=webp&q=90'
                        "
                        alt=""
                      />
                    </div>
                    <div class="pro-name">Redmi X65 2022款</div>
                    <div class="pro-price">3499元</div>
                  </a>
                </li>
                <li class="product">
                  <!-- 以新窗口跳转 -->
                  <a href="" target="_blank">
                    <div class="pro_img">
                      <img
                        v-lazy="
                          'https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/8871821795310769c1d3896c99b12381.png?thumb=1&w=200&h=138&f=webp&q=90'
                        "
                        alt=""
                      />
                    </div>
                    <div class="pro-name">小米电视6 65″ OLED</div>
                    <div class="pro-price">6999起</div>
                  </a>
                </li>
                <li class="product">
                  <!-- 以新窗口跳转 -->
                  <a href="" target="_blank">
                    <div class="pro_img">
                      <img
                        v-lazy="
                          'https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/0a1ae5341d2dae66cd42566c60d2d666.png?thumb=1&w=200&h=138&f=webp&q=90'
                        "
                        alt=""
                      />
                    </div>
                    <div class="pro-name">小米电视 大师 77″OLED</div>
                    <div class="pro-price">17999元</div>
                  </a>
                </li>
                <li class="product">
                  <!-- 以新窗口跳转 -->
                  <a href="" target="_blank">
                    <div class="pro_img">
                      <img
                        v-lazy="
                          'https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/932b583c6eccd8aabfa0771f8a854940.jpg?thumb=1&w=200&h=138&f=webp&q=90'
                        "
                        alt=""
                      />
                    </div>
                    <div class="pro-name">小米透明OLED电视 55英寸</div>
                    <div class="pro-price">39999元</div>
                  </a>
                </li>
                <li class="product">
                  <!-- 以新窗口跳转 -->
                  <a href="" target="_blank">
                    <div class="pro_img">
                      <img
                        v-lazy="
                          'https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/ea3390a20547c7298a258528e4aa69ad.png?thumb=1&w=200&h=138&f=webp&q=90'
                        "
                        alt=""
                      />
                    </div>
                    <div class="pro-name">小米电视 大师 65英寸OLED</div>
                    <div class="pro-price">9499元起</div>
                  </a>
                </li>
              </ul>
            </div>
          </div>
        </div>
        <div class="header-search">
          <div class="wrapper">
            <input type="text" name="keyword" />
            <a href="javascript:;"></a>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { Message } from "element-ui";
import { mapState } from "vuex";
export default {
  name: "nav-header",
  data() {
    return {
      phoneList: [],
    };
  },
  computed: {
    // username() {
    //   return this.$store.state.username;
    // },
    // cartCount() {
    //   return this.$store.state.cartCount;
    // },

    //使用mapState简化代码的写法 效果如上代码一样
    ...mapState(["username", "cartCount"]),
  },
  filters: {
    currency(val) {
      if (!val) {
        return "0.00";
      } else {
        return "￥" + val.toFixed(2) + "元";
      }
    },
  },
  mounted() {
    this.getProductList();
    let params = this.$route.params;
    if (params && params.from == "login") {
      this.getCartCount();
    }
  },
  methods: {
    login() {
      this.$router.push("/login");
    },
    getProductList() {
      this.axios
        .get("/products", {
          params: {
            categoryId: "100012",
            pageSize: 6,
          },
        })
        .then((res) => {
          this.phoneList = res.list.slice(0, 6);
        });
    },
    getCartCount() {
      this.axios.get("/carts/products/sum").then((res = 0) => {
        this.$store.dispatch("savecartCount", res);
      });
    },
    logout() {
      this.axios.post("/user/logout").then(() => {
        Message.success("退出成功");
        this.$cookie.set("userId", "", { expires: "-1" });
        this.$store.dispatch("saveUserName", "");
        this.$store.dispatch("savecartCount", "0");
      });
    },
    goToCart() {
      this.$router.push("/cart");
    },
  },
};
</script>

<style lang="scss">
//引入container的公共部分
@import "./../assets/scss/base.scss";
//引入样式使flex布局实现水平、垂直居中
@import "./../assets/scss/mixin.scss";
@import "./../assets/scss/config.scss";
.header {
  .nav-topbar {
    height: 39px;
    line-height: 39px;
    background-color: #333333;
    color: #b0b0b0;
    .container {
      @include flex();
      a {
        display: inline-block;
        color: #b0b0b0;
        margin-right: 17px;
      }
      .my-cart {
        width: 110px;
        background-color: #ff6600;
        text-align: center;
        color: #fff;
        margin-right: 0;
        .icon-cart {
          //调用mixin.scss中的bgImg方法传入宽、高、图片地址、及bgsize样式
          @include bgImg(16px, 12px, "/imgs/icon-cart-checked.png", contain);
          margin-right: 4px;
        }
      }
    }
  }
  .nav-header {
    .container {
      position: relative;
      height: 112px;
      @include flex();
      .header-menu {
        display: inline-block;
        width: 643px;
        padding-left: 209px;
        .item-menu {
          display: inline-block;
          // margin-top: 10px;
          color: #333333;
          font-weight: bold;
          font-size: 16px;
          line-height: 112px;
          padding-right: 20px;
          span {
            cursor: pointer;
          }
          &:hover {
            color: $colorA;
            .children {
              height: 220px;
              opacity: 1;
            }
            cursor: pointer;
          }
          .children {
            position: absolute;
            top: 112px;
            left: 0;
            width: 1226px;
            height: 0px;
            opacity: 0;
            overflow: hidden;
            background-color: #fff;
            border-top: 1px solid #e5e5e5;
            box-shadow: 0px 7px 6px 0px rgba(0, 0, 0, 0.11);
            z-index: 10;
            transition: all 0.5s;
            .product {
              position: relative;
              float: left;
              width: 16.6%;
              height: 220px;
              font-size: 12px;
              line-height: 12px;
              text-align: center;
              a {
                display: inline-block;
              }
              img {
                width: auto;
                height: 111px;
                margin-top: 26px;
              }
              .pro-img {
                height: 137px;
              }
              .pro-name {
                font-weight: bold;
                margin-top: 19px;
                margin-bottom: 8px;
                color: $colorB;
              }
              .pro-price {
                color: $colorA;
              }
              &:before {
                content: " ";
                position: absolute;
                top: 28px;
                right: 0;
                border-left: 1px solid $colorF;
                height: 100px;
                width: 1px;
              }
              &:last-child:before {
                display: none;
              }
            }
          }
        }
      }
    }
  }
  .header-search {
    width: 319px;
    .wrapper {
      height: 50px;
      border: 1px solid #e0e0e0;
      display: flex;
      align-items: center;
      input {
        border: none;
        box-sizing: border-box;
        border-right: 1px solid #e0e0e0;
        width: 264px;
        height: 48px;
        padding-left: 14px;
      }
      a {
        //调用mixin.scss中的bgImg方法传入宽、高、图片地址、及bgsize样式
        @include bgImg(18px, 18px, "/imgs/icon-search.png", contain);
        margin-left: 17px;
      }
    }
  }
}
</style>